Which Add-On Services Actually Pay? A Discipline-by-Discipline Guide

An add-on service only earns you the difference between what it charges and what the appointment slot would have earned anyway. A £65 shockwave session in a diary where a £63 follow-up was waiting is worth £2, not £65. Every supplier payback calculator you will be shown ignores this, and it is usually the number that decides whether the thing pays.

That single correction changes most of the answers below. Work through it before you buy anything.

Why is the slot the number that matters?

Because you are not short of machines. You are short of hours.

A supplier's return on investment calculator works like this: machine costs £12,000, you charge £120 a session, so 100 sessions clears it. Which is true only if those 100 sessions would otherwise not have happened.

If your diary is already busy, they would have happened. The slot would have held a standard follow-up at your normal fee. So the add-on did not earn £120, it earned £120 minus your follow-up fee.

UK private practice runs at 72.3% average diary utilisation according to the Private Practice Barometer 2026, so most readers are in the first row and most add-ons look better than this warning implies. But the moment you fill up, the maths inverts, and nobody warns you.

What does an add-on actually cost?

Three numbers, and suppliers quote you one.

One: the kit. The number in the brochure.

Two: the training. A two-day dry needling module runs around £435. Certification for most modalities sits somewhere between a few hundred and a couple of thousand pounds, plus the days you are not earning while you attend.

Three: the permissions. The cost nobody mentions, and the one that catches people.

Acupuncture and dry needling pierce the skin, which in much of the UK means local authority licensing or registration, with rules and fees that vary by council. Our guide to the special treatment licence covers how that works and how much it varies, which is a great deal.

Separately, some insurers require a Level 4 qualification before they will extend professional indemnity to dry needling or medical acupuncture. Buying the course and discovering afterwards that your policy does not cover the work is a bad week.

So the real cost is kit plus training plus licence plus indemnity uplift plus lost earning days. Suppliers quote the first one.

How to work out the payback honestly

Five lines. Use your own numbers.

1. Incremental fee = add-on price minus your standard follow-up fee (use the full price only if the slot would have been empty)
2. Realistic weekly volume = be pessimistic, then halve it
3. Weekly contribution = incremental fee × weekly volume
4. Total cost = kit + training + licence + indemnity uplift + lost days
5. Payback in weeks = total cost ÷ weekly contribution

If the answer is over about eighteen months, the add-on is a clinical decision rather than a commercial one. That can still be the right call. Just make it knowingly.

Physiotherapy

Shockwave therapy. UK session prices run £60 to £250, with most clinics between £60 and £150 and London at the top. Packages of four to six sessions are standard. Manufacturers quote mid-range pneumatic units in dollars, roughly equivalent to a five-figure sum in sterling, with portable devices well below that and hospital-grade systems far above.

The honest version: at £65 a session against a £63 follow-up, shockwave earns you nothing per slot. At £120 against £63 it earns £57, and a £12,000 machine clears in around 211 sessions. At four a week that is roughly a year. Price it as a premium service or do not buy it.

Be sceptical of supplier payback claims. Every source we found quoting two to three month returns sells the machines. Ask specifically about applicator head life and replacement cost, because "no consumables" is a claim worth testing.

Dry needling and medical acupuncture. Around £435 for a two-day module, plus licensing and the possible indemnity condition above. Rarely billed separately in the UK, and that is the point: it usually works as a reason to choose you rather than a line item. Hard to model, genuinely effective at differentiating.

Clinical Pilates and rehab classes. The strongest economics in physiotherapy, because they break the one-patient-per-slot rule. Six people at £15 is £90 an hour against £63. Equipment can be minimal if you start with mat work. The constraint is not kit, it is a room and the attendance rate, which is the thing that quietly kills most classes.

Running and gait analysis. Priced around £98 to £135 in podiatry, and physiotherapy sits similar. Treat it as a front door rather than a profit centre. It often barely clears its own time, and it feeds a treatment episode behind it.

Podiatry

The discipline with the clearest add-on economics in allied health, because the procedures are discrete, priced separately and genuinely premium.

Prices are from published clinic price lists, so they are advertised rates rather than survey data, and the spread is wide.

Nail surgery is the standout. A procedure at £299 against a routine appointment at the podiatry median follow-up of £61 is an incremental £238 for a longer but not five-times-longer slot. Very few add-ons in any discipline compare.

Nail reconstruction is the sleeper. At £5 to £10 it is not a service, it is a two-minute upsell inside an appointment you are already delivering. No extra slot, no extra room, negligible kit. The economics are better than they look precisely because they are small.

Before adding surgical work, check whether it changes your CQC position and your indemnity terms. We have not verified where the boundary sits and you should not take our word for it.

Osteopathy and chiropractic

Fee ceilings are lower here. Osteopathy medians are £70 initial and £55 follow-up, chiropractic £69 and £47, so the premium available over a standard appointment is thinner than in physiotherapy.

Shockwave works on the same maths as above but from a lower base, which makes the pricing decision harder and the case weaker.

Rehab and exercise classes are the better bet for the same reason as in physiotherapy: they escape the one-patient-per-hour ceiling that is the actual constraint on both professions.

Orthotics can work, but read our guide to VAT on orthotics first, because supplying goods alongside exempt healthcare is not always the simple margin it appears to be.

Imaging. If you are considering X-ray, the regulatory load is substantial. Our IRMER guide covers it. This is not an add-on, it is a second business.

Massage therapy

The constraint here is that almost every add-on is another hour of your hands.

What genuinely helps: hot stone, cupping and similar modalities, which support a higher hourly rate rather than a separate fee. Training is cheap, kit is cheap, and the effect is on your price rather than your volume.

What changes the business: courses of treatment sold up front, and a deliberate choice between employment, renting a room and going mobile. Our guide to spa, room or mobile works through which of those actually pays.

What to avoid: anything that adds an hour of physical work to a working week that is already limited by your body. The ceiling in massage is not demand, it is shoulders.

Speech and language therapy

Groups are the single best economic lever, for the same reason as Pilates. Our guide to group versus individual pricing covers the structure.

Reports and tribunal work are genuinely high-value and genuinely underpriced by most independents. See EHCP and tribunal fees.

Training and workshops for school staff or nurseries are the overlooked one. You prepare once and deliver many times, which is the only kind of add-on that scales without costing you more hours each time.

Occupational therapy

Assessments and reports are the core add-on, and pricing them separately from sessions is the decision that matters. See report versus session pricing.

Workplace and DSE assessments open a corporate route with a very different fee expectation from clinical work, and employers pay without insurer authorisation.

Expert witness work pays well and carries duties people underestimate. Read case manager or expert witness before accepting an instruction.

Counselling, psychotherapy and psychology

Groups again, where clinically appropriate.

Workshops and psychoeducation prepared once, delivered repeatedly.

Supervision, once you are qualified to offer it, which converts your experience into a second income stream that does not depend on clinical hours. See BACP supervision requirements for where the demand comes from.

Employer and EAP work brings volume at a lower rate. Whether that trade is worth it depends entirely on how full your diary already is, which is the theme of this whole article.

Dietetics and nutrition

Programmes rather than appointments. A twelve-week structured programme priced as one thing sells better than twelve appointments priced separately, and it changes what the client commits to at the start.

Corporate wellbeing sessions carry a different fee expectation from clinical work.

Digital products such as meal plans look like free money and are not. Read the VAT trap on meal plans first, because selling a digital product is not the same supply as providing care.

Be careful with anything involving testing or claims: what nutritionists may claim and what dietitians may claim both set out ground that is easy to stray across when you are marketing a package.

Sports therapy

Pitchside and club contracts provide predictable block income rather than per-session income, which is worth more than the headline rate suggests. Check pitchside qualifications first.

Screening and movement assessment for clubs and gyms, sold per squad rather than per person.

Corporate and event work, which is lumpy but high value.

What usually does not pay

Patterns we noticed across every discipline.

Anything priced at your normal rate. If the add-on charges what a follow-up charges, it is not a revenue line. It might still be a good clinical decision or a good marketing one. It is not an earner.

Equipment bought before demand exists. The order is patients, then waiting list, then equipment. Reversing it is the most common expensive mistake in private practice.

Add-ons that need a second room you do not have.

Anything needing a licence you have not priced. Skin piercing is the usual culprit.

Retail, usually. Selling supports and tape feels like easy margin. In practice it ties up cash in stock, takes space, and raises a question about selling goods to someone who just took your clinical advice. Some practices do it well. Most find the margin does not justify the complication.

The one-page test before you buy anything

1. What is my current diary utilisation? Under 75%, the add-on earns close to full price. Near capacity, only the premium counts
2. What is the incremental fee over my standard appointment?
3. What is the total cost, including training, licence and lost earning days?
4. How many a week, honestly? Then halve it
5. Does it need a licence or an indemnity change?
6. Would I still do this if it broke even? If yes, it is a clinical decision and that is fine. If no, the numbers have to work on their own

A note on tracking it

The reason most practices cannot answer question one is that utilisation is not a number anybody writes down. Neither is how many of a given service you delivered last quarter, or what share of your income comes from each.

Any decent system should tell you what you actually sold and when the diary was empty. Atlacare reports on appointments and revenue by service, and Clinic Health tracks diary utilisation as one of its six dimensions, which is the number this article keeps returning to.

Whatever you use, get the number before you spend five figures on a machine.

Prices here are drawn from published clinic price lists, manufacturer material and survey medians, not from audited accounts. Equipment costs quoted by manufacturers were given in US dollars and are approximate in sterling. Supplier return-on-investment claims are marketing material and should be treated as such. Licensing, indemnity and CQC implications vary and must be checked for your own circumstances.

Sources: UK Private Practice Barometer 2026 · CSP, acupuncture and dry needling · AACP

Related: Do I need a special treatment licence? · How much should an osteopath charge? · Is there VAT on orthotics?